You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@spark.apache.org by "Chelsea Zhang (JIRA)" <ji...@apache.org> on 2015/06/19 02:47:00 UTC

[jira] [Created] (SPARK-8468) Cross-validation with RegressionEvaluator prefers higher RMSE

Chelsea Zhang created SPARK-8468:
------------------------------------

             Summary: Cross-validation with RegressionEvaluator prefers higher RMSE
                 Key: SPARK-8468
                 URL: https://issues.apache.org/jira/browse/SPARK-8468
             Project: Spark
          Issue Type: Bug
          Components: ML
    Affects Versions: 1.4.0
            Reporter: Chelsea Zhang


Please correct me if I'm wrong, but RegressionEvaluator seems to implement the evaluate() method backwards. The interface expects higher return values from evaluate() to indicate better models. RegressionEvaluator returns RMSE by default - a value we should try to minimize.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org